The Templeton Developmental Center was a state-run facility for the mentally handicapped located in Templeton. Founded as the Templeton Farm Colony in 1899 through the efforts of Walter E. Fernald, superintendent of what is now called the Fernald School in Waltham, Massachusetts, it was considered an innovative and progressive facility for managing the state’s developmentally disabled population at the time. The large facility was closed in 2015, with some intermediate care facilities remaining open on the campus. The property and some of the buildings were listed on the National Register of Historic Places in 1994.